[comp.dcom.telecom] How About More Digits in Addition to Caller ID ?

brad@looking.on.ca (Brad Templeton) (03/14/90)

Keeping track of the numbers of the fax machines that call you is silly,
I think.

What would make a lot of sense would be extensible phone numbers.
After you key in a phone number, the system should let you keep
dialing, terminating with a '#' or somesuch as needed.

Then the extra digits should be sent to the recipient or PBX or
whatever.

Those digits might be an extension in the case of a PBX (no need for
centrex) or a code to identify who you're calling (fax machine, modem,
particular person.)  This would also replace the system whereby they
give you several numbers that ring differently.  Instead you dial
suffix digits.

Ideally, the telco could assign some codes (say all 3 digit codes
starting with 9) for official purposes.  These codes would have
standard meanings that everybody would obey -- fax machine, e-mail
hookup, switchboard, voice-mail message center etc.)

Thus all fax machines would use suffix 999, and fax machines would
know to add this suffix.

Nice trick is that it doesn't hurt to add the suffix when calling a
regular number, it's just ignored.